Question

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WHAT IS CONTACT FORCE?​

Answer 1

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A contact force is any force that requires contact to occur.

Pushing a car up a hill or kicking a ball or pushing a desk across a room are some of the everyday examples where contact forces are at work.

Answer 2

Forces that act on an object only when they are in contact with it are contact force. Eg:- Muscular force, Frictional force etc.